Abstract
This paper reports the generation of cold plasma jet working under atmospheric pressure condition, for surface treatment of polymeric films. The discharge has been characterized by electrical and optical methods. The electrical property of the discharge has been studied by taking current-voltage wave forms using voltage and current probes. The production of argon plasma jet is done in atmospheric conditions which are relatively much cheaper, convenient, and safer to use. The atmospheric pressure plasma jet sustained in pure argon has been used to improve wettability of polypropylene (PP). Cold atmospheric pressure plasma jet (CAPPJ) has been generated by a high-voltage power supply (5.5 kV, 0-20 kV) at an operating frequency of 20 kHz. The surface properties of the controls and plasma-treated PP samples were characterized by contact angle measurement, surface free energy measurement, scanning electron microscopy, and the Fourier transform-infrared spectroscopy analysis.
Highlights
In the last two decades, plasma treatment of wood plastic composite (WPC) has been gaining popularity as a surface modification technique
In order to characterize the plasma jet, its electron temperature and its composition have been determined by means of optical emission spectroscopy [9, 10]
The samples were ultrasonically cleaned in distilled water for 15 minutes and after that dried at room temperature in a clean environment
Summary
In the last two decades, plasma treatment of wood plastic composite (WPC) has been gaining popularity as a surface modification technique. Polymer plastic has high strength for many structural designs, highly used in decoration and wood plastic building due to excellent processing anticorrosion and water resistance [1]. Plastics are both natural and synthetic; specially, synthesized plastic contains ester groups, and benzene ring can interact with polymer chain which brings compatibility increases the intermolecular spacing. The application of plasma jet to the treatment of polymeric materials has become increasingly important and is used to increase the adhesion strengths from control to plasmatreated samples by incorporation of oxygen-containing polar functional groups on the surface of polymers [14,15,16].
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